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Diffstat (limited to 'drivers/rtc')
-rw-r--r--drivers/rtc/interface.c16
-rw-r--r--drivers/rtc/rtc-at91.c3
-rw-r--r--drivers/rtc/rtc-dev.c25
-rw-r--r--drivers/rtc/rtc-ds1553.c3
-rw-r--r--drivers/rtc/rtc-rs5c372.c6
-rw-r--r--drivers/rtc/rtc-test.c2
6 files changed, 40 insertions, 15 deletions
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index 579cd667b16f..6f11f6dfdd9d 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -145,6 +145,13 @@ int rtc_set_alarm(struct class_device *class_dev, struct rtc_wkalrm *alarm)
}
EXPORT_SYMBOL_GPL(rtc_set_alarm);
+/**
+ * rtc_update_irq - report RTC periodic, alarm, and/or update irqs
+ * @class_dev: the rtc's class device
+ * @num: how many irqs are being reported (usually one)
+ * @events: mask of RTC_IRQF with one or more of RTC_PF, RTC_AF, RTC_UF
+ * Context: in_interrupt(), irqs blocked
+ */
void rtc_update_irq(struct class_device *class_dev,
unsigned long num, unsigned long events)
{
@@ -201,12 +208,12 @@ int rtc_irq_register(struct class_device *class_dev, struct rtc_task *task)
if (task == NULL || task->func == NULL)
return -EINVAL;
- spin_lock(&rtc->irq_task_lock);
+ spin_lock_irq(&rtc->irq_task_lock);
if (rtc->irq_task == NULL) {
rtc->irq_task = task;
retval = 0;
}
- spin_unlock(&rtc->irq_task_lock);
+ spin_unlock_irq(&rtc->irq_task_lock);
return retval;
}
@@ -216,10 +223,10 @@ void rtc_irq_unregister(struct class_device *class_dev, struct rtc_task *task)
{
struct rtc_device *rtc = to_rtc_device(class_dev);
- spin_lock(&rtc->irq_task_lock);
+ spin_lock_irq(&rtc->irq_task_lock);
if (rtc->irq_task == task)
rtc->irq_task = NULL;
- spin_unlock(&rtc->irq_task_lock);
+ spin_unlock_irq(&rtc->irq_task_lock);
}
EXPORT_SYMBOL_GPL(rtc_irq_unregister);
@@ -265,3 +272,4 @@ int rtc_irq_set_freq(struct class_device *class_dev, struct rtc_task *task, int
}
return err;
}
+EXPORT_SYMBOL_GPL(rtc_irq_set_freq);
diff --git a/drivers/rtc/rtc-at91.c b/drivers/rtc/rtc-at91.c
index bd61e99540a3..5c8addcaf1fb 100644
--- a/drivers/rtc/rtc-at91.c
+++ b/drivers/rtc/rtc-at91.c
@@ -292,7 +292,8 @@ static int __init at91_rtc_probe(struct platform_device *pdev)
AT91_RTC_CALEV);
ret = request_irq(AT91_ID_SYS, at91_rtc_interrupt,
- IRQF_SHARED, "at91_rtc", pdev);
+ IRQF_DISABLED | IRQF_SHARED,
+ "at91_rtc", pdev);
if (ret) {
printk(KERN_ERR "at91_rtc: IRQ %d already in use.\n",
AT91_ID_SYS);
diff --git a/drivers/rtc/rtc-dev.c b/drivers/rtc/rtc-dev.c
index dcf5f86461f7..828b329e08e0 100644
--- a/drivers/rtc/rtc-dev.c
+++ b/drivers/rtc/rtc-dev.c
@@ -62,7 +62,9 @@ static void rtc_uie_task(struct work_struct *work)
int err;
err = rtc_read_time(&rtc->class_dev, &tm);
- spin_lock_irq(&rtc->irq_lock);
+
+ local_irq_disable();
+ spin_lock(&rtc->irq_lock);
if (rtc->stop_uie_polling || err) {
rtc->uie_task_active = 0;
} else if (rtc->oldsecs != tm.tm_sec) {
@@ -75,11 +77,11 @@ static void rtc_uie_task(struct work_struct *work)
} else if (schedule_work(&rtc->uie_task) == 0) {
rtc->uie_task_active = 0;
}
- spin_unlock_irq(&rtc->irq_lock);
+ spin_unlock(&rtc->irq_lock);
if (num)
rtc_update_irq(&rtc->class_dev, num, RTC_UF | RTC_IRQF);
+ local_irq_enable();
}
-
static void rtc_uie_timer(unsigned long data)
{
struct rtc_device *rtc = (struct rtc_device *)data;
@@ -215,7 +217,7 @@ static int rtc_dev_ioctl(struct inode *inode, struct file *file,
struct rtc_wkalrm alarm;
void __user *uarg = (void __user *) arg;
- /* check that the calles has appropriate permissions
+ /* check that the calling task has appropriate permissions
* for certain ioctls. doing this check here is useful
* to avoid duplicate code in each driver.
*/
@@ -239,10 +241,10 @@ static int rtc_dev_ioctl(struct inode *inode, struct file *file,
/* avoid conflicting IRQ users */
if (cmd == RTC_PIE_ON || cmd == RTC_PIE_OFF || cmd == RTC_IRQP_SET) {
- spin_lock(&rtc->irq_task_lock);
+ spin_lock_irq(&rtc->irq_task_lock);
if (rtc->irq_task)
err = -EBUSY;
- spin_unlock(&rtc->irq_task_lock);
+ spin_unlock_irq(&rtc->irq_task_lock);
if (err < 0)
return err;
@@ -300,6 +302,17 @@ static int rtc_dev_ioctl(struct inode *inode, struct file *file,
err = rtc_set_time(class_dev, &tm);
break;
+
+ case RTC_IRQP_READ:
+ if (ops->irq_set_freq)
+ err = put_user(rtc->irq_freq, (unsigned long *) arg);
+ break;
+
+ case RTC_IRQP_SET:
+ if (ops->irq_set_freq)
+ err = rtc_irq_set_freq(class_dev, rtc->irq_task, arg);
+ break;
+
#if 0
case RTC_EPOCH_SET:
#ifndef rtc_epoch
diff --git a/drivers/rtc/rtc-ds1553.c b/drivers/rtc/rtc-ds1553.c
index 78552e6e76aa..001eb1123a65 100644
--- a/drivers/rtc/rtc-ds1553.c
+++ b/drivers/rtc/rtc-ds1553.c
@@ -340,7 +340,8 @@ static int __init ds1553_rtc_probe(struct platform_device *pdev)
if (pdata->irq >= 0) {
writeb(0, ioaddr + RTC_INTERRUPTS);
- if (request_irq(pdata->irq, ds1553_rtc_interrupt, IRQF_SHARED,
+ if (request_irq(pdata->irq, ds1553_rtc_interrupt,
+ IRQF_DISABLED | IRQF_SHARED,
pdev->name, pdev) < 0) {
dev_warn(&pdev->dev, "interrupt not available.\n");
pdata->irq = -1;
diff --git a/drivers/rtc/rtc-rs5c372.c b/drivers/rtc/rtc-rs5c372.c
index 2a86632580f1..a44fe4efa216 100644
--- a/drivers/rtc/rtc-rs5c372.c
+++ b/drivers/rtc/rtc-rs5c372.c
@@ -126,13 +126,13 @@ static int rs5c372_get_trim(struct i2c_client *client, int *osc, int *trim)
return -EIO;
}
- dev_dbg(&client->dev, "%s: raw trim=%x\n", __FUNCTION__, *trim);
-
if (osc)
*osc = (buf & RS5C372_TRIM_XSL) ? 32000 : 32768;
- if (trim)
+ if (trim) {
*trim = buf & RS5C372_TRIM_MASK;
+ dev_dbg(&client->dev, "%s: raw trim=%x\n", __FUNCTION__, *trim);
+ }
return 0;
}
diff --git a/drivers/rtc/rtc-test.c b/drivers/rtc/rtc-test.c
index bc4bd24508a2..6ef9c62d5032 100644
--- a/drivers/rtc/rtc-test.c
+++ b/drivers/rtc/rtc-test.c
@@ -99,6 +99,7 @@ static ssize_t test_irq_store(struct device *dev,
struct rtc_device *rtc = platform_get_drvdata(plat_dev);
retval = count;
+ local_irq_disable();
if (strncmp(buf, "tick", 4) == 0)
rtc_update_irq(&rtc->class_dev, 1, RTC_PF | RTC_IRQF);
else if (strncmp(buf, "alarm", 5) == 0)
@@ -107,6 +108,7 @@ static ssize_t test_irq_store(struct device *dev,
rtc_update_irq(&rtc->class_dev, 1, RTC_UF | RTC_IRQF);
else
retval = -EINVAL;
+ local_irq_enable();
return retval;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-18 08:56:38 +0000